Identify the hormones that are secreted in large amount prior to ovulation :
$A.$ $LH$
$B.$ $FSH$
$C.$ $Estrogen$
$D.$ $Progesterone$
$A\; only$
$A \;\&\;\ B \;only$
$A, B \;\& \;C only$
$A, B, C \;\&\; D$
The extra-embryonic membranes of the mammalian embryo are derived from
The eggs in which fate of every part of the egg becomes fixed are called
The fifth cleavage of the fertilized egg of frog results in the formation of
The corpus luteum secretes ……..
Sperm lysins contains
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